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NetBSD/lib/libform/form.h

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/* $NetBSD: form.h,v 1.21 2011/11/28 12:44:18 joerg Exp $ */
/*-
* Copyright (c) 1998-1999 Brett Lymn
* (blymn@baea.com.au, brett_lymn@yahoo.com.au)
* All rights reserved.
*
* This code has been donated to The NetBSD Foundation by the Author.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*
*/
#ifndef FORM_H
#define FORM_H 1
#include <sys/queue.h>
#include <stdarg.h>
#include <curses.h>
#include <eti.h>
/* Define the types of field justification that can be used. */
#define NO_JUSTIFICATION (0)
#define JUSTIFY_RIGHT (1)
#define JUSTIFY_LEFT (2)
#define JUSTIFY_CENTER (3)
/* Define the max and min valid justification styles for range checking */
#define MIN_JUST_STYLE NO_JUSTIFICATION
#define MAX_JUST_STYLE JUSTIFY_CENTER
/* Options for the fields */
typedef unsigned int Form_Options;
/* form options */
#define O_BS_OVERLOAD (0x001)
#define O_NL_OVERLOAD (0x002)
/* field options */
#define O_VISIBLE (0x001) /* Field is visible */
#define O_ACTIVE (0x002) /* Field is active in the form */
#define O_PUBLIC (0x004) /* The contents entered into the field is echoed */
#define O_EDIT (0x008) /* Can edit the field */
#define O_WRAP (0x010) /* The field contents can line wrap */
#define O_BLANK (0x020) /* Blank the field on modification */
#define O_AUTOSKIP (0x040) /* Skip to next field when current is full */
#define O_NULLOK (0x080) /* Field is allowed to contain no data */
#define O_STATIC (0x100) /* Field is not dynamic */
#define O_PASSOK (0x200) /* An umodified field is OK */
#define O_REFORMAT (0x400) /* Insert newlines at linebreaks on buffer get */
/*
* Form driver requests - be VERY careful about changing the ordering
* of the requests below. The form driver code depends on a particular
* order for the requests.
*/
#define REQ_MIN_REQUEST (KEY_MAX + 0x101) /* must equal value of the
first request */
#define REQ_NEXT_PAGE (KEY_MAX + 0x101) /* next page in form */
#define REQ_PREV_PAGE (KEY_MAX + 0x102) /* previous page in form */
#define REQ_FIRST_PAGE (KEY_MAX + 0x103) /* goto first page in form */
#define REQ_LAST_PAGE (KEY_MAX + 0x104) /* goto last page in form */
#define REQ_NEXT_FIELD (KEY_MAX + 0x105) /* move to the next field */
#define REQ_PREV_FIELD (KEY_MAX + 0x106) /* move to the previous field */
#define REQ_FIRST_FIELD (KEY_MAX + 0x107) /* goto the first field */
#define REQ_LAST_FIELD (KEY_MAX + 0x108) /* goto the last field */
#define REQ_SNEXT_FIELD (KEY_MAX + 0x109) /* move to the next field
in sorted order */
#define REQ_SPREV_FIELD (KEY_MAX + 0x10a) /* move to the prev field
in sorted order */
#define REQ_SFIRST_FIELD (KEY_MAX + 0x10b) /* move to the first
sorted field */
#define REQ_SLAST_FIELD (KEY_MAX + 0x10c) /* move to the last sorted
field */
#define REQ_LEFT_FIELD (KEY_MAX + 0x10d) /* go left one field */
#define REQ_RIGHT_FIELD (KEY_MAX + 0x10e) /* go right one field */
#define REQ_UP_FIELD (KEY_MAX + 0x10f) /* go up one field */
#define REQ_DOWN_FIELD (KEY_MAX + 0x110) /* go down one field */
#define REQ_NEXT_CHAR (KEY_MAX + 0x111) /* move to the next char
in field */
#define REQ_PREV_CHAR (KEY_MAX + 0x112) /* move to the previous
char in field */
#define REQ_NEXT_LINE (KEY_MAX + 0x113) /* go to the next line in
the field */
#define REQ_PREV_LINE (KEY_MAX + 0x114) /* go to the previous line
in the field */
#define REQ_NEXT_WORD (KEY_MAX + 0x115) /* go to the next word in
the field */
#define REQ_PREV_WORD (KEY_MAX + 0x116) /* go to the previous word
in the field */
#define REQ_BEG_FIELD (KEY_MAX + 0x117) /* go to the beginning of
the field */
#define REQ_END_FIELD (KEY_MAX + 0x118) /* go to the end of the field */
#define REQ_BEG_LINE (KEY_MAX + 0x119) /* go to the beginning of
the line */
#define REQ_END_LINE (KEY_MAX + 0x11a) /* go to the end of the
line */
#define REQ_LEFT_CHAR (KEY_MAX + 0x11b) /* move left in the field */
#define REQ_RIGHT_CHAR (KEY_MAX + 0x11c) /* move right in the field */
#define REQ_UP_CHAR (KEY_MAX + 0x11d) /* move up in the field */
#define REQ_DOWN_CHAR (KEY_MAX + 0x11e) /* move down in the field */
#define REQ_NEW_LINE (KEY_MAX + 0x11f) /* insert/overlay a new line */
#define REQ_INS_CHAR (KEY_MAX + 0x120) /* insert a blank char at
the cursor */
#define REQ_INS_LINE (KEY_MAX + 0x121) /* insert a blank line at
the cursor */
#define REQ_DEL_CHAR (KEY_MAX + 0x122) /* delete the current character */
#define REQ_DEL_PREV (KEY_MAX + 0x123) /* delete the character
before the current */
#define REQ_DEL_LINE (KEY_MAX + 0x124) /* delete the current line */
#define REQ_DEL_WORD (KEY_MAX + 0x125) /* delete the word at the cursor */
#define REQ_CLR_EOL (KEY_MAX + 0x126) /* clear to the end of the line */
#define REQ_CLR_EOF (KEY_MAX + 0x127) /* clear to the end of the field */
#define REQ_CLR_FIELD (KEY_MAX + 0x128) /* clear the field */
#define REQ_OVL_MODE (KEY_MAX + 0x129) /* overlay mode */
#define REQ_INS_MODE (KEY_MAX + 0x12a) /* insert mode */
#define REQ_SCR_FLINE (KEY_MAX + 0x12b) /* scroll field forward one line */
#define REQ_SCR_BLINE (KEY_MAX + 0x12c) /* scroll field backward
one line */
#define REQ_SCR_FPAGE (KEY_MAX + 0x12d) /* scroll field forward one page */
#define REQ_SCR_BPAGE (KEY_MAX + 0x12e) /* scroll field backward
one page */
#define REQ_SCR_FHPAGE (KEY_MAX + 0x12f) /* scroll field forward
half a page */
#define REQ_SCR_BHPAGE (KEY_MAX + 0x130) /* scroll field backward
half a page */
#define REQ_SCR_FCHAR (KEY_MAX + 0x131) /* horizontal scroll
forward a character */
#define REQ_SCR_BCHAR (KEY_MAX + 0x132) /* horizontal scroll
backward a character */
#define REQ_SCR_HFLINE (KEY_MAX + 0x133) /* horizontal scroll
forward a line */
#define REQ_SCR_HBLINE (KEY_MAX + 0x134) /* horizontal scroll
backward a line */
#define REQ_SCR_HFHALF (KEY_MAX + 0x135) /* horizontal scroll
forward half a line */
#define REQ_SCR_HBHALF (KEY_MAX + 0x136) /* horizontal scroll
backward half a line */
#define REQ_VALIDATION (KEY_MAX + 0x137) /* validate the field */
#define REQ_PREV_CHOICE (KEY_MAX + 0x138) /* display previous field choice */
#define REQ_NEXT_CHOICE (KEY_MAX + 0x139) /* display next field choice */
#define REQ_MAX_COMMAND (KEY_MAX + 0x139) /* must match the last
driver command */
/* The following defines are for ncurses compatibility */
#define MIN_FORM_COMMAND REQ_MIN_REQUEST
#define MAX_FORM_COMMAND REQ_MAX_COMMAND
typedef struct _form_string {
size_t allocated;
unsigned int length;
char *string;
} FORM_STR;
typedef struct _form_field FIELD;
typedef struct _form_struct FORM;
typedef struct _form_fieldtype FIELDTYPE;
typedef struct _formi_page_struct _FORMI_PAGE_START;
typedef struct formi_type_link_struct _FORMI_TYPE_LINK;
typedef struct _formi_field_lines _FORMI_FIELD_LINES;
typedef void (*Form_Hook)(FORM *);
/* definition of a field in the form */
struct _form_field {
unsigned int rows; /* rows in the field */
unsigned int cols; /* columns in the field */
unsigned int drows; /* dynamic rows */
unsigned int dcols; /* dynamic columns */
unsigned int max; /* maximum growth */
unsigned int form_row; /* starting row in the form subwindow */
unsigned int form_col; /* starting column in the form subwindow */
unsigned int nrows; /* number of off screen rows */
int index; /* index of this field in form fields array. */
int nbuf; /* number of buffers associated with this field */
int buf0_status; /* set to true if buffer 0 has changed. */
int justification; /* justification style of the field */
int overlay; /* set to true if field is in overlay mode */
_FORMI_FIELD_LINES *cur_line; /* pointer to the current line cursor
is on */
unsigned int start_char; /* starting char in string (horiz scroll) */
_FORMI_FIELD_LINES *start_line; /* start line in field (vert scroll) */
unsigned int row_count; /* number of rows actually used in field */
unsigned int row_xpos; /* char offset of cursor in field, not same
as cursor_xpos due to tab expansion */
unsigned int cursor_xpos; /* x pos of cursor in field */
unsigned int cursor_ypos; /* y pos of cursor in field */
short page_break; /* start of a new page on the form if 1 */
short page; /* number of the page this field is on */
chtype fore; /* character attributes for the foreground */
chtype back; /* character attributes for the background */
int pad; /* padding character */
Form_Options opts; /* options for the field */
FORM *parent; /* the form this field is bound to, if any */
FIELD *up; /* field above this one */
FIELD *down; /* field below this one */
FIELD *left; /* field to the left of this one */
FIELD *right; /* field to the right of this one */
void *userptr; /* user defined pointer. */
FIELD *link; /* used if fields are linked */
FIELDTYPE *type; /* type struct for the field */
CIRCLEQ_ENTRY(_form_field) glue; /* circle queue glue for sorting fields */
char *args; /* args for field type. */
_FORMI_FIELD_LINES *alines; /* array of the starts and ends of lines */
_FORMI_FIELD_LINES *free; /* list of lines available for reuse */
FORM_STR *buffers; /* array of buffers for the field */
};
/* define the types of fields we can have */
extern FIELDTYPE *TYPE_ALNUM;
extern FIELDTYPE *TYPE_ALPHA;
extern FIELDTYPE *TYPE_ENUM;
extern FIELDTYPE *TYPE_INTEGER;
extern FIELDTYPE *TYPE_NUMERIC;
extern FIELDTYPE *TYPE_REGEXP;
extern FIELDTYPE *TYPE_IPV4;
extern FIELDTYPE *TYPE_IPV6;
extern FIELDTYPE *TYPE_USER;
/* definition of a field type. */
struct _form_fieldtype {
unsigned flags; /* status of the type */
unsigned refcount; /* in use if > 0 */
_FORMI_TYPE_LINK *link; /* set if this type is linked */
char * (*make_args)(va_list *); /* make the args for the type */
char * (*copy_args)(char *); /* copy the args for the type */
void (*free_args)(char *); /* free storage used by the args */
int (*field_check)(FIELD *, char *); /* field validation routine */
int (*char_check)(int, char *); /* char validation routine */
int (*next_choice)(FIELD *, char *); /* function to select next
choice */
int (*prev_choice)(FIELD *, char *); /* function to select prev
choice */
};
/*definition of a form */
struct _form_struct {
int in_init; /* true if performing a init or term function */
int posted; /* the form is posted */
int wrap; /* wrap from last field to first field if true */
WINDOW *win; /* window for the form */
WINDOW *subwin; /* subwindow for the form */
WINDOW *scrwin; /* this is the window to use for output */
void *userptr; /* user defined pointer */
Form_Options opts; /* options for the form */
Form_Hook form_init; /* function called when form posted and
after page change */
Form_Hook form_term; /* function called when form is unposted and
before page change */
Form_Hook field_init; /* function called when form posted and after
current field changes */
Form_Hook field_term; /* function called when form unposted and
before current field changes */
int field_count; /* number of fields attached */
int cur_field; /* current field */
int page; /* current page of form */
int max_page; /* number of pages in the form */
_FORMI_PAGE_START *page_starts; /* dynamic array of fields that start
the pages */
CIRCLEQ_HEAD(_formi_sort_head, _form_field) sorted_fields; /* sorted field
list */
FIELD **fields; /* array of fields attached to this form. */
};
/* Public function prototypes. */
__BEGIN_DECLS
FIELD *current_field(FORM *);
int data_ahead(FORM *);
int data_behind(FORM *);
FIELD *dup_field(FIELD *, int, int);
int dynamic_field_info(FIELD *, int *, int *, int *);
char *field_arg(FIELD *);
chtype field_back(FIELD *);
char *field_buffer(FIELD *, int);
int field_count(FORM *);
chtype field_fore(FIELD *);
int field_index(FIELD *);
int field_info(FIELD *, int *, int *, int *, int *, int *, int *);
Form_Hook field_init(FORM *);
int field_just(FIELD *);
Form_Options field_opts(FIELD *);
int field_opts_off(FIELD *, Form_Options);
int field_opts_on(FIELD *, Form_Options);
int field_pad(FIELD *);
int field_status(FIELD *);
Form_Hook field_term(FORM *);
FIELDTYPE *field_type(FIELD *);
void *field_userptr(FIELD *);
int form_driver(FORM *, int);
FIELD **form_fields(FORM *);
Form_Hook form_init(FORM *);
int form_max_page(FORM *);
Form_Options form_opts(FORM *);
int form_opts_off(FORM *, Form_Options);
int form_opts_on(FORM *, Form_Options);
int form_page(FORM *);
WINDOW *form_sub(FORM *);
Form_Hook form_term(FORM *);
void *form_userptr(FORM *);
WINDOW *form_win(FORM *);
int free_field(FIELD *);
int free_fieldtype(FIELDTYPE *);
int free_form(FORM *);
FIELD *link_field(FIELD *, int, int);
FIELDTYPE *link_fieldtype(FIELDTYPE *, FIELDTYPE *);
int move_field(FIELD *, int, int);
FIELD *new_field(int, int, int, int, int, int);
FIELDTYPE *new_fieldtype(int (* field_check)(FIELD *, char *),
int (* char_check)(int, char *));
FORM *new_form(FIELD **);
int new_page(FIELD *);
int pos_form_cursor(FORM *);
int post_form(FORM *);
int scale_form(FORM *, int *, int *);
int set_current_field(FORM *, FIELD *);
int set_field_back(FIELD *, chtype);
int set_field_buffer(FIELD *, int, char *);
int set_field_fore(FIELD *, chtype);
int set_field_init(FORM *, Form_Hook);
int set_field_just(FIELD *, int);
int set_field_opts(FIELD *, Form_Options);
int set_field_pad(FIELD *, int);
int set_field_printf(FIELD *, int, char *, ...) __printflike(3, 4);
int set_field_status(FIELD *, int);
int set_field_term(FORM *, Form_Hook);
int set_field_type(FIELD *, FIELDTYPE *, ...);
int set_field_userptr(FIELD *, void *);
int set_fieldtype_arg(FIELDTYPE *, char *(*)(va_list *),
char *(*)(char *),
void (*)(char *));
int set_fieldtype_choice(FIELDTYPE *, int (*)(FIELD *, char *),
int (*)(FIELD *, char *));
int set_form_fields(FORM *, FIELD **);
int set_form_init(FORM *, Form_Hook);
int set_form_opts(FORM *, Form_Options);
int set_form_page(FORM *, int);
int set_form_sub(FORM *, WINDOW *);
int set_form_term(FORM *, Form_Hook);
int set_form_userptr(FORM *, void *);
int set_form_win(FORM *, WINDOW *);
int set_max_field(FIELD *, int);
int set_new_page(FIELD *, int);
int unpost_form(FORM *);
__END_DECLS
#endif /* FORM_H */
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